This mountain bike seat tube clamp is a practical accessory for bicycles. It is made of aluminum alloy, featuring excellent durability. It can withstand a certain amount of pressure and friction, providing reliable support for the long - term use of the bicycle. Its specifications are 31.8/34.9MM, which are suitable for various mountain bikes with different size requirements. This multi - specification design greatly enhances its versatility and can meet the adaptation needs of different consumers. The seat tube clamp adopts a screw hollow design, which not only reduces its own weight but also maintains its firmness. While ensuring that it can firmly clamp the seat post, it also contributes to the overall lightweight of the bicycle, making cycling easier. Whether for daily rides or mountain bike competitions, it can be a reliable accessory on your bicycle and enhance your cycling experience.